Milk-cooler



(No Model.)

S. M. HEULINGS, Jr. & ELEVANS.

MILK'OOOLER. No. 471,974.-

Patented Mar. 29, 1892. :EEg- .zz...

. V wi NITED STATES PATENT SAMUEL M. HEULINGS, J R., AND ELLWOOD EVANS,OF HADDONFIELD, NEW JERSEY.

MILK-COOLER.

SPECIFICATION forming part of Letters Patent No. 471,974, dated March29, 1892.

Application filed August 3, 1891.

T0 at whom it may concern:

Be it known that we, SAMUEL M. HEULINGS, J r., and ELLWOOD EVANS,citizens of the United States, residing at Haddonfield, in the county ofCamden, State of New Jersey, have invented certain new and usefulImprovements in Milk-Coolers, of which the following is a specification,reference being had therein to the accompanying drawings.

This invention has reference to milk or other liquid coolers of thatclass which comprises a corrugated cooling surface and means connectedtherewith for applying water or any other refrigerant, and in detail insome respects the invention refers to such coolers when adapted forsuspension.

Among the objects of the invention are to provide such a construction aswill permit of a ready access throughout the entire surface of thecorrugated plates for cleaning purposes and the rotation orsemi-rotation of the entire apparatus to give access to both sides andall parts, thus further facilitating the operation of cleansing thesame.

A further object is to provide means for suspension which will not onlybe pendulous, whereby the apparatus will automatically assume aperpendicular position, but which shall serve at the same time toreceive and conduct in a desired circuit or direction and deliver fromthe apparatus the refrigerant employed.

It is also an object of the invention to firmly unite the two adjacentcorrugated coolingplates by some means which shall leave the ends ofsaid plates free and unobstructed, so that the hand or any cleaningdevice may pass completely along the corrugations when clea ning theplates. Heretofore such plates have terminated against standards orother parts, thereby forming at the end and within the corrugationsrecesses or places which were more or less difficult to be cleaned. Ourimprovement in this regard obviates this objection.

Other objects and advantages of the invention will be hereinafterdescribed, and the novel features thereof will be particularly pointedout in the claims.

Referring to the drawings, Figure 1 is a side elevation of a coolingapparatus con- Serial No. 401,551. (No model.)

structed in accordance with our invention. Fig. 2 is an end elevationwith a portion of the frame-work removed. Fig. 3 is a detail inperspective illustrating one manner of securing the ends of thecorrugated plates. Fig. 4 is an elevation of one end of an apparatus,illustrating a modification of our invention.

Like letters refer to like parts in all the figures.

' A A representthe cooling-surfaces of the apparatus, and each consistsof a corrugated plate usually of sheet metal. For the purpose of unitingthese plates we first place between them a filling A, which may be ofmetal, paper, or paper-pulp, plaster-of-paris, cement, or any othersuitable material. This filling conforms to the inner surfaces of eachof the plates and extends from one to the other and is arranged at sucha distance from the end as will leave a pocket or recess extending fromend to end, and into said pocket or recess We pour or flow or otherwiseplace solder or other liquid metal A and allow the same to harden. Inthis manner the two plates are secured firmly together, and noobstruction whatever remains within the corrugations or along the edgesand upon the outer surfaces of the plates, so that every portion of saidsurfaces is readily accessible for cleaning p111- poses. We also by thismethod provide a filling-piece which exactly conforms to anyirregularities in the corrugations of the plate, and thus produce notonly a water-tight connection, but provide a support from all points forthe plates. These results cannot practically be secured by cutting andfitting by hand a filling or spacer. When the filling A is of metal wefind it necessary only to flow the solder or other liquid metal alongthe lines of juncture between said filling and the corrugated plates.This method of uniting the parts secures the same advantage ofpreventing any obstruction upon the outer surfaces and within thecorrugations of the plates, whereby they are readily cleaned.

The upper and lower ends of the cooling I too fittings; but we do notlimit our invention in this regard. At the top we mount or form thebranches B and castings B which conform on their inner surfaces to thecontour of the perforated receiving-trough O, the ends of which aresoldered or otherwise secured to the castings. At the lower end and uponthe branches or pipes B and we form castings D, which upon their innersurfaces conform to the contour of the trough E, provided with thedischarge-pipe E, and said castings may or may not, as desired, beprovided with feet D, upon which the apparatus may rest when placed uponthe floor. Trunnions F are provided 011 the frame-work and serve for thepivotal connection with the apparatus of suspension links or hooks G,that are to be connected with brackets H, extending from a wall or othersupport. A ring H, or it may be lugs H only'one of which is shown formedon the frame-work, is or are provided for the purpose of connecting thelinks with the frame at a point above the trunnions, so as to preventany undue oscillation of the apparatus. The ring is intended to remainin connection with the frame-work while the apparatus is suspended anddisconnected and while it is being rotated or semi-rotated for access toopposite sides for cleaning purposes. It will be noted that in rotatingthe apparatus the pivotal connection of the links with the trunnionpermits a movement away from the wall suflicient to allow the apparatusto turn. This could not take place if the links were rigidly connectedat the trunnion s. The ring .H' is lifted from the boss or projection Bin order to permit of the turning of the apparatus, and when the lugs Hare employed a sidewise movement will release them from the link inorder to permit the appara tus to be turned. The ring connection may bepreferable as being less rigid than the lugs unless the latter arespaced so as to permit of a slight oscillation of the apparatus upon thetrunnions in order that it may seek an tomaticallyits perpendicular; butin either case the apparatus would find its own perpendicular by reasonof its suspension upon the brackets being practically pivotal. Thetrunnions F are hollow, as is the frame-work, and in order to secure apassage of the cooling-liquid from bottom to top and within thecoolingplates a plug I is placed above one of the trunnions and belowthe opposite trunnion,

so that the liquid takes the course indicated 1 by the arrow.

\Ve do not limit our invention to the exact construction of trunnionshown, but illustrate one form which is acceptable. This form comprisesa washer F and a coupling F placed upon the trunnion in the order namedand outside of the link G, the coupling being screwthreaded or otherwisemounted upon the trunnion and adapted for connection with or insertioninto a hose or other pipe.

It is evident that any of the well-known pipe connections which areemployed where one part remains stationary and another rotates may beused at the trunnions of our apparatus.

Instead of employing a frame-work of piping, and in order to providetrunnions and links to apparatus of this class in which there arestandards at the ends of the corrugated plates, we propose to applytrunnions F either solid or hollow, to said standards, as illustrated bydotted lines in Fig. 4. These trunnions may be placed either at or abovethe middle lengthwise of the standard, if desired, because the excess ofweight of the cooling-liquid below the trunnions might facilitate thefinding of an exact perpendicular when the apparatus is suspended. henhollow trunnions are provided upon the standards, they may be hollow andcommunicate either directly with the space between the plates orwith ahollow chamber F cast or otherwise formed in the standard and extendingdown to the bottom of the plates and communicating with their interior,as at F. In this manner we secure an upward circulation of thecooling-liquid.

In some instances we provide the standards with a frame-work B Fig. 4,communicating with the space between the cooling-plates at the top orbottom by means of the pipe E 13. In this manner the trunnions and linksand cooling-liquid-supply pipes may be applied to old forms of standardswhich have no chamber F formed thereon, whereby said forms of apparatusare adapted to be rotated for cleaning purposes without removing themfrom their brackets. The link-suspension and link-and-frame-connectingdevices II II permit of the use of trunnions for turning the apparatusand at the same time retain pendulous support and action of theapparatus.

It is apparent to persons skilled in the art that the unobstructedcorrugations may be secured without the use of the filling A in theoperation of closing up the ends with molten metal by placing the platesand maintaining them by any desired means at the proper distance apartand dipping them into molten metal or solder a desired depth to securethe desired thickness of the metal filling A In this operation it is ofcourse understood that while the inner surfaces of the plates are attheir ends properly fluxed their outer surfaces are either oiled or inany other well-known manner treated, so as to prevent the adherence ofthe molten metal thereon. \Ve therefore do not limit our invention to aparticular manner or method of forming the unobstructed corrugatedcooling-plates and their end fillings.

IVhat we claim is- V l. The combination, with a rotatable coolingapparatus, of suspension-links, substantially as specified.

2. The combination, with a cooling apparatus having trunnions, ofsuspension-links and removable link-retaining devices, substantially asspecified.

IIO

3. The combination, with the cooling-plates, of a hollow frame-workprovided with hollow trunnions and suspension-links loosely connected tosaid trunnions, substantially as specified.

4. The combination, with the cooling-plates, of a hollow frame providedwith hollow trunnions located between the ends of the frame,substantially as specified.

5. The combination, with the cooling-plates, of a hollow frame providedwith trunnions and means for supporting the same on said trunnions,located between the ends of the frame, substantially as specified.

6. A cooling apparatus comprising plates corrugated transversely andsupported in operative position by means located between the plates,whereby the ends of the corrugations on their outer surfaces are leftfree and unobstructed for cleaning purposes, substantially as specified.

7. The combination of corrugated coolingplates and an intermediatefilling of metal, limited to the space between and simultaneouslyuniting the plates, substantially as specified.

8. The combination, with the cooling-plates, of a hollow frame-workhaving hollow trunnions, links pivoted on the trunnions, an-d nozzlesconnected with the trunnions, substantially as specified.

9. The combination, with the cooling-plates, of the frame 13, havingpipes B, the trough ends B fitted to the pipes, and the trough C,substantially as specified.

10. The combination, with the corrugated plates A, of the frame B,having pipe 13, the trough O, and trough ends for supporting and shapingthe trough, mounted on the pipes, substantially as specified.

11. The combination, with the plates A, of the frame B, having the pipesB the trough ends having feet D, and the trough E, substantially asspecified.

12. The combination, with the coolingplates, of a frame-work providedwith trunnions and suspension-links loosely connected to the trunnionsbetween the ends of the frame-work, as set forth.

In testimony whereof we affix our signatures in presence of twowitnesses.

SAMUEL M. HEULINGS, JR. ELLWVOOD EVANS. Witnesses:

J AMES M. CASSADY, THOMAS B. FENER.

